Cameron County Judge Eddie Trevino Jr has ordered closures between 4.30pm and 6.30pm BST and then 11pm and 1am BST.
Judge Trevino said: “At appropriate intervals, the road will reopen to allow traffic to pass then reclose for the continuation of space flight activities.
“During these intermittent road closures, Boca Chica Beach will remain open to the public.”
However, according to Boca Chica resident and NASASpaceflight member, the first closure was issued for the transportation of a SpaceX crane to the launch site.
If all goes according to plan, Starship SN15 will launch to an altitude of at least 32,000ft (10km), after which it will dive back to the ground.